Article
Chemistry, Multidisciplinary
Yuang Chen, Lina Lin, Wangqiong Xu, Chao Liu, Chengzhong Yu, Yan Cheng, Ruijuan Qi, Rong Huang
Summary: This study focuses on the improvement of cycle performance in photocatalysis by preparing an Ag2O/TiO2 heterostructure photocatalyst. The results show that the microstructure evolution and photoelectric properties of the photocatalyst play a key role in achieving stable and improved performance.
Article
Materials Science, Ceramics
Jia-Qi Li, Qing-Meng Zhao, Yong-Dong Zhou, Zong-Yan Zhao
Summary: Heterostructures consisting of CuGaO2 nanosheets and TiO2 nanoparticles were synthesized through a one-pot hydrothermal method. The CuGaO2/TiO2 heterostructure exhibited a higher photocurrent density and tetracycline hydrochloride degradation efficiency compared to pristine CuGaO2 nanosheets and TiO2 nanoparticles. Experimental characterizations and density functional theory calculations showed that the built-in electric field in the CuGaO2/TiO2 interface region promoted the separation of photogenerated carriers.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2023)
Article
Chemistry, Physical
Yilei He, Lijuan Zhang, Yanze Wei, Xing Zhang, Zumin Wang, Ranbo Yu
Summary: The nano-heterostructured combination of SrTiO3 and TiO2, with optimized interface achieved through bandgap engineering, demonstrates high efficiency in separating charge carriers, leading to exceptional photocatalytic performance for H-2 production.
Article
Chemistry, Physical
Yaru Zhao, Chengyi Wang, Zhifeng Liu
Summary: In this study, a PZT/Ag2O heterostructure was designed to improve dye degradation efficiency by chemical precipitation. The carrier separation process and the pyroelectric polarization effect on PZT/Ag2O heterostructure performance were discussed in detail. Under a temperature cycle and visible light irradiation, PZT/1.5Ag2O with bi-catalysis degraded 93.7% of RhB within 140 min, which was significantly higher than the individual bi-catalysis degradation rates of PZT (27.78%) and Ag2O (61.97%). The enhanced catalytic efficiency was attributed to the expanded light response range and the promoted carrier separation and transfer by pyroelectric polarization. Additionally, the composite showed increased hydrophilicity, which may contribute to its improved performance. The concept of PZT/Ag2O heterostructure pyro-photo-catalyst provides a promising approach for utilizing solar and thermal energy. (c) 2023 Elsevier B.V. All rights reserved.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Physical
Tingcha Wei, Juan Xu, Caixia Kan, Le Zhang, Xingzhong Zhu
Summary: The study focuses on the construction of a g-C3N4/TiO2 heterostructure with tailored Au nanoparticles for efficient charge separation in photocatalysis. The enhanced charge separation leads to excellent photocatalytic activity for pollutant degradation and water splitting, with superoxide radicals identified as playing a crucial role in the catalytic process. Insights into the distinct roles of Au in heterostructure for significantly enhanced charge separation are provided, paving the way for the design of high-efficiency heterostructure photocatalysts with noble metal decoration.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Multidisciplinary
Kefayat Ullah, Won-Chun Oh
Summary: Novel visible-light photocatalyst TiO2-FG/Sr-hexaferrite nanocomposites were fabricated using a simple hydrothermal technique, and their properties were analyzed using various techniques. The unique composite catalyst showed superior photocatalytic properties for the disintegration of organic dyes under visible-light irradiation due to the synergistic effect of TiO2-FG and the fast conducting path provided by the graphene surface. The ternary structure between TiO2, FG, and Sr-hexaferrites also contributed to the high photocatalytic behavior.
Article
Chemistry, Physical
Yifan Wang, Xiangyu Meng, Qiyu Hu, Meiyu Zhang, Xiaohu Cao, Chunjiang Xu, Yong Ding
Summary: The combination of Ti3+ doped TiO2-x with ZnIn2S4 resulted in a novel photocatalyst with improved hydrogen evolution reaction (HER) performance compared to TiO2-x alone. The formation of a Type II heterojunction enhanced the separation of photogenerated carriers and electron transfer rate, leading to higher hydrogen evolution rate.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Materials Science, Multidisciplinary
Gedeng Wan, Yongqiang Yang, Huaze Zhu, Chao Zhen, Xiaoxiang Xu, Lianzhou Wang, Gang Liu
Summary: This study demonstrates the fast migration and efficient spatial separation of photogenerated charges in photocatalytic materials by constructing a three-phase heterostructure of CdS/PbTiO3/TiO2, leading to improved efficiency in solar water splitting reactions.
SCIENCE CHINA-MATERIALS
(2022)
Article
Engineering, Chemical
Pengwei Jia, Yuanliang Li, Zhanshen Zheng, Yan Wang, Tong Liu, Jixiang Duan
Summary: By utilizing the piezoelectric effect, a ferroelectric SrBi4Ti4O15/Ag2O p-n heterojunction catalyst is designed, leading to a significant enhancement of photocatalytic degradation. It can degrade 99.54% Rhodamine B within 6 minutes with an ultra-high degradation rate constant (k = 0.8949 min-1), which is 3.24 times of the photocatalytic degradation rate and 17.38 times of the piezocatalytic degradation rate. Additionally, this catalyst shows excellent degradation effect on other organic pollutants as well. This study provides valuable insights for designing efficient photocatalysts by coupling photocatalysis and piezoelectric effect.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Chemistry, Physical
Qing Han, Shiwen Du, Yumin Wang, Ziwu Han, Hongjing Li, Hu Xu, Pengfei Fang
Summary: In this work, few-layered MoSe2 nanosheets were grown vertically on TiO2 nanorods to synthesize a direct Z-scheme heterojunction, exhibiting efficient piezocatalytic and piezo-photocatalytic performance. The MoSe2/TNr heterostructure showed superior piezoelectric degradation efficiency and a piezo-photoelectric synergistic effect. This study broadens the application prospects of piezocatalysis and piezo-photocatalysis in renewable energy harvesting and water purification.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Energy & Fuels
Zhu Liu, Kang Xu, Hai Yu, Zhaoqi Sun
Summary: In this study, MoS2/TiO2 heterostructure arrays modified with Ag nanoparticles were successfully synthesized to enhance the photoelectrochemical and photocatalytic properties, with the best performance achieved by a hydrothermal reaction time of 12 hours. The synergistic effect of MoS2/TiO2 heterostructure, surface plasmon resonance of Ag nanoparticles and narrow bandgap of MoS2 was proposed to explain the enhancement of these properties.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2021)
Article
Chemistry, Physical
Jianwu Fei, Zhenbang Han, Yang Deng, Tao Wang, Jin Zhao, Chunhong Wang, Xiaoming Zhao
Summary: By anchoring iron phthalocyanine/TiO2 heterostructure onto amidoximated polyacrylonitrile fibers, the FePc loading and photocatalytic efficiency can be improved, resulting in higher reaction kinetics for the degradation of organic contaminants.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2021)
Article
Materials Science, Ceramics
Al-Zoha Warsi, Omima K. Hussien, Ayesha Iftikhar, Fatima Aziz, Dalal Alhashmialameer, Samy F. Mahmoud, Muhammad Farooq Warsi, Dalia I. Saleh
Summary: In this study, the photocatalytic degradation ability of Ag2O/CuO nanocomposite was investigated, revealing its efficient removal of colored and colorless dyes. By optimizing the preparation method, the nanocomposite exhibited higher degradation efficiency compared to individual metal oxides. The results demonstrate that the synthesized nanocomposite has tremendous potential for degrading toxic pollutants in a short period of time.
CERAMICS INTERNATIONAL
(2022)
Article
Engineering, Multidisciplinary
Haiyang Liu, Feng Sun, Xinyue Li, Qianli Ma, Guixia Liu, Hui Yu, Wensheng Yu, Xiangting Dong, Zhongmin Su
Summary: A double S-scheme heterostructure graphene aerogel photocatalyst (CTZA) is successfully prepared using the isoelectric point assisted calcination technique. CTZA exhibits excellent photocatalytic performance in removing heavy metal ions and degrading pollutants due to the advantages of the double S-scheme heterostructure and graphene aerogel framework.
COMPOSITES PART B-ENGINEERING
(2023)
Article
Chemistry, Physical
A. A. Vodyankin, Yu. A. Belik, V. I. Zaikovskii, O. V. Vodyankina
Summary: Two series of Ag-TiO2 photocatalysts were prepared with variations in irradiation time and precursor concentration. Optical properties and catalytic activity of the resulting catalysts were found to be influenced by precursor concentration and irradiation time, with increased superoxide species generation on the surface of Ag clusters contributing to higher conversion in visible light photocatalysis.
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
(2021)
Article
Nanoscience & Nanotechnology
Q. Y. Zhang, D. Q. Shi, W. Xu, C. Y. Miao, C. Y. Ma, C. S. Ren, C. Zhang, Z. Yi
Article
Chemistry, Physical
W. Xu, S. Q. Wang, Q. Y. Zhang, C. Y. Ma, X. N. Li, Q. Wang, D. H. Wen
JOURNAL OF PHYSICAL CHEMISTRY C
(2017)
Article
Chemistry, Physical
Lijian Meng, Wei Xu, Qingyu Zhang, Tao Yang, Shikao Shi
APPLIED SURFACE SCIENCE
(2019)
Article
Chemistry, Physical
W. Xu, S. Q. Wang, Q. Y. Zhang, C. Y. Ma, Q. Wang, D. H. Wen, X. N. Li
JOURNAL OF ALLOYS AND COMPOUNDS
(2019)
Article
Materials Science, Coatings & Films
Wei Xu, Heli Tang, Qing-Yu Zhang, Nan Zhou, Yu Shen
SURFACE & COATINGS TECHNOLOGY
(2020)
Article
Materials Science, Multidisciplinary
Wei Xu, Xin Mao, Nan Zhou, Qing-Yu Zhang, Bo Peng, Yu Shen
Summary: The study investigated the plasma near the sputtering target using optical emission spectroscopy and found that the atomic oxygen density ([O]) plays a crucial role in the growth behavior and crystallinity of NiO films. By adjusting the sputtering mode and [O] value, it is possible to influence the orientation growth and crystallinity of NiO films.
Article
Materials Science, Ceramics
Wei Xu, Rui Qiu, Xin Mao, Xu Yang, Bo Peng, Yu Shen
Summary: In this study, amorphous Ni-Fe-P alloys with different phosphorus concentrations were fabricated by one-step electrodeposition, showing enhanced HER and OER performances with optimized phosphorus concentration. As bifunctional electrodes for water splitting, the NiFe-P catalysts exhibited excellent overall water splitting performance and durability, surpassing that of as-synthesized Ni-Fe alloys.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2022)
Article
Chemistry, Physical
Xu Yang, Rui Qiu, Ming-Jian Lan, Gang Chen, Wei Xu, Yu Shen
Summary: Designing efficient and low-cost electrocatalysts is crucial for hydrogen storage and conversion of renewable energy. This study presents a binder-free Ni-Fe-S electrocatalyst with excellent hydrogen evolution reaction performance and potential in overall water electrocatalysis.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Physical
Wei Xu, Shuan Zhao, Jun-Peng Zhang, Xu Yang, Yu-Xia Tang, Yi-Wen Han, Yu Shen
Summary: In this study, amorphous Ni-Fe-S electrocatalysts were synthesized on Cu sheets and Ni foams using a simple electrodeposition method. The optimized Ni-Fe-S electrocatalysts demonstrated enhanced hydrogen and oxygen evolution reaction performances compared to Ni-Fe and Ni catalysts. The bifunctional Ni-Fe-S electrodes exhibited excellent stability and only required low cell voltages to achieve high current densities.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Multidisciplinary
W. Xu, C. X. Li, Q. Y. Zhang, C. Y. Ma, Q. Wang, D. H. Wen, X. N. Li
Article
Materials Science, Multidisciplinary
Ping Zhang, Xiujie Yue, Yeran Gao, Zhenyong Lin, Shunxiang Wang, Songting Zhang
Summary: This paper investigates the strengthening mechanism of highspeed cutting and solid particle-entrained waterjet peening (HSC-WJP) composite reinforcement on 7075-T6 aluminum alloy. The research results show that composite reinforcement can improve surface quality, reduce surface pits and roughness, and decrease the size of precipitation-free zone (PFZ) at grain boundaries.
Article
Materials Science, Multidisciplinary
Sangyoon Lee, Hwi Yoon, Sanghun Lee, Seung-min Chung, Hyungjun Kim
Summary: The wettability of metal oxides, particularly HfO2 thin films deposited via atomic layer deposition, and its correlation with surface free energy have been studied. It was found that surface oxygen species significantly affect the intrinsic hydrophilicity of HfO2 thin films, and the crystalline orientations also evolve with film thickness.
Article
Materials Science, Multidisciplinary
Changdong Yin, Yiwen Wu, Zhou Xu, Dongdong Ye, Jun Yao, Jianjun Chen, Qiang Liu, Xin Ge, Meiling Ding
Summary: This study proposed a new strategy to indirectly estimate the hydrogen diffusivity of metallic materials under tensile stress by combining the electrochemical hydrogen permeation test (EHPT), the hydrogen diffusion descriptive equation based on Fick's law, and hydrogen pre-charged tensile test. The results showed that the hydrogen permeation curve obtained was highly approximate to the theoretical trend. The hydrogen embrittlement (HE) susceptibility of the specimens increased with increasing stress.
Article
Materials Science, Multidisciplinary
Huan Luo, Wei-yi Wang, Xin Yu, Xian-jun Lei, Lang Liu, Guo-zheng Zha, Wen-long Jiang, Bin Yang, Bao-qiang Xu
Summary: Separating selenium and tellurium is a general challenge in material and non-ferrous metallurgical industries. This paper proposes a novel method that achieved efficient separation of selenium and tellurium using gas-liquid equilibrium phase diagram and valence regulation-vacuum gasification technique.
Article
Materials Science, Multidisciplinary
Fan Zhang, Rong Xin Wang, Aiqin Tian, Fangzhi Li, Jianping Liu, Hui Yang
Summary: Deposition of Pd/Pt/Au three-layer films on p-GaN under high and ultra-high vacuum conditions was studied to investigate the electrical contact properties. Linear I-V curves were observed in samples deposited under ultra-high vacuum conditions, while nonlinear I-V characteristics were obtained in samples deposited under high vacuum conditions. The study also found that the samples deposited under high vacuum conditions had higher amounts of oxygen and Pd oxide. The oxide layer had an additional influence on the electrical characteristics of the Pd/Pt/Au/p-GaN contact.
Article
Materials Science, Multidisciplinary
Hongli Liu, Chengzhe Liu, Ying Sui, Zhongxian Liu, Tiangang Zhang, Zhiqiang Zhang, Shuang Sun, Jianwei Jia
Summary: This study utilized polysiloxane and hafnium carbide to produce Si-N-C-O-Hf hybridized ceramic fibers, and obtained ceramic fibers with hemispherical particles on the surface through electrostatic spinning and pyrolysis. The ceramic fibers exhibited excellent thermal stability, oxidation resistance, and high temperature insulation.
Article
Materials Science, Multidisciplinary
M. Abaker, Nazar Elamin Ahmed, A. Saad, H. F. Khalil, E. M. M. Ibrahim, A. M. Adam
Summary: This paper systematically studied the internal structure and thermoelectric properties of In1-xGaxSb alloys prepared by melting synthesis at 1123 K. The results showed that doping with Ga in the In sites led to a significant increase in the Seebeck coefficient and power factor, while reducing the thermal conductivity. The maximum dimensionless figure of merit was observed at 403 K.
Article
Materials Science, Multidisciplinary
Fucheng Yu, Jinlong Ren, Jielin Zhang, Haiyang Chen, Xin Tian, Chenchen Feng, Cuixia Li, Jianbin Zhang, Xianxi Tang, Xiaogang Hou
Summary: An environmentally friendly ZnO@BiVO4 composite photocatalyst was prepared using in-situ self-assembly and solvothermal methods, demonstrating good photocatalytic performance. The mass ratio of BiVO4 and NCZ was found to influence the photocatalytic performance of the composite.
Article
Materials Science, Multidisciplinary
Yaoming Shao, Pingping Zheng, Tianhao Dong, Lianghuan Wei, Haifei Wu, Jianxiao Si
Summary: In this paper, Mg3Bi2 films were prepared on glass substrate using magnetron sputtering, and the phase composition and thermoelectric properties of the films were investigated with different atomic ratios. The films displayed a metastable cubic phase and high conductivity when the atomic ratio exceeded stoichiometry.
Article
Materials Science, Multidisciplinary
I. V. Uimanov, D. L. Shmelev, S. A. Barengolts
Summary: A two-dimensional axisymmetric model has been developed to study the prebreakdown processes in a cathode microprotrusion under an external electric field. The simulation results show that electrohydrodynamic instability leads to the formation of a nanometer-sized conical protrusion on the microprotrusion tip, significantly accelerating the heating process.
Article
Materials Science, Multidisciplinary
Weilun Zhang, Di Yang, Feng Gong, Yongjun Chen, Tian Chen, Zhiwen Xie, Sirui Yang
Summary: A novel Pt doping method was designed to improve the thermal stability of CrWN coating. The doping of Pt atoms effectively blocks the coherent growth of the grains and creates a significant mixing effect, resulting in a smooth surface with uniform element distribution.
Article
Materials Science, Multidisciplinary
Xiaoye Wang, Xiaoguang Yang, Wenna Du, Tao Yang
Summary: In this study, the effects of multiple growth parameters on self-catalyzed growth of InAs/GaSb axial heterostructured nanowires on Si substrate by MOCVD were investigated. It was found that the growth temperature and switching time have significant influences on the nanowire growth.
Article
Materials Science, Multidisciplinary
Weizhong Cui, Yan Zhao, Can Cui, Xing Liu, Beili Pang, Jianguang Feng, Hongzhou Dong, Liyan Yu, Lifeng Dong
Summary: This study introduces Co2+ cations into Cs2AgBiBr6 film to improve its quality, grain size, and conductivity, resulting in enhanced solar cell efficiency.
Article
Materials Science, Multidisciplinary
Jian Wang, Ke Yang, Xianming Cheng, Yalin Lu, Ganghui Wu, Yang Zhang, Yun Kan
Summary: The corrosion behavior and microstructural evolution of Sc microalloyed Al-3.2Cu-1.5Li alloys were investigated in detail. The microstructural results showed higher levels of dislocations density in the Sc microalloyed sample, which resulted in significantly refined grains and T1 precipitates. Microalloying with Sc changed the corrosion mode of the alloy and localized corrosion was found to occur preferentially at the subgrain within unrecrystallized grains with high grain stored energy.
Article
Materials Science, Multidisciplinary
Weifeng Liu, Na Liu, Kaiqiang Song, Meiqin Zeng, Zhongchen Lu
Summary: Monoclinic WO3 prepared through plasma milling exhibits higher photocatalytic activity due to its higher surface area, increased oxygen vacancies, and defects.
